J/30 Class Association Forums J/30 Forum The Boat, Sails and Equipment Halyard Loads

so OK ... is a wire grove what you are looking for?

or does their

2" Nylatron Sheave - 31/64" wide, 3/8" ID: K-11638:
Heavy-duty Nylatron Sheave is 2" OD x 1/2" (.484") wide x 3/8" ID. As used on Kenyon Jib Boxes, K-11590 and K-11591 (upper Sheave), and in other applications. With Rope Groove.

work for you?

I think there is a move away from wire ...

if you are talking .016 in. as a problem oversize ... you could sand it down?